On 21 July 2015 at 13:13, Michael Grunditz <michael.grund...@gmail.com> wrote: >> Ok, this is definitely wrong. >> >> I very strongly suspect that this is part of smsq_atari_hwinit_asm, >> which should however go : >> >> at_mdloop >> move.w (a0)+,(a1)+ (NOT moveq #$41,d5) >> cmpa.l a2,a1 >> blt.s at_mdlopp >> rts >> > > That's exactly what I thought about. > >> You can check this, hopefully, by checking whether a few bytes before >> these instructions you find the string "Use sprite for cursor". >> > > Yep I found that : > >> disasm $12b40 > $012b40 : 6052 bra.s $12b94 > $012b42 : 7a4b moveq #$4b,d5 > $012b44 : 6002 bra.s $12b48 > $012b46 : 7a41 moveq #$41,d5 > $012b48 : b3ca cmpa.l a2,a1 > $012b4a : 6dfa blt.s $12b46 > $012b4c : 4e75 rts > $012b4e : 6012 bra.s $12b62 > > This is right after the string. > >> If this is really there, then somehow the instructions get corrupted, >> making the move.w (a0)+,(a1)+ into a moveq. >> >> Could you disassemble the code as of the address contained in A6, which >> is a few bytes before the loop? >> > > See above. >> Is there really no way you can insert a breakpoint into the code which >> would call up your debugger? >> > No. > I can set a breakpoint at a address. > > > As I explained in the beginning of this thread it somehow relates to > the TOS. The same SMSQ.PRG work with emutos but not with 1.62. > > I guess I can patch the binary. But if this (the bad moveq ) fails > there are probably more places that gets wrong.
HEXdump: 000005e0: 0003 5965 7300 ffff 2689 2649 4299 32d8 ..Yes...&.&IB.2. 000005f0: b3ca 6dfa 4e75 6012 0000 46fc 2700 4e70 ..m.Nu`...F.'.Np 00000600: 4cf8 0300 0000 2e48 4ed1 2f07 6622 41fa L......HN./.f"A. 00000610: 053a 2010 671a 0cb0 514d 4f4e 0804 6708 .: .g...QMON..g. 00000620: d0a8 0004 d1c0 60ea 41f0 0808 70ff 4e90 ......`.A...p.N. 00000630: 2e1f 4eba 0306 1a3a fbda 0885 0000 6604 ..N....:......f. 00000640: 4eba 03fa 8c05 1a3c 001e ca06 0c05 0008 N......<........ 32d8 b3ca 6dfa , the debugger reports 7a41 instead of 32d8 _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
